JPH0410936A - Intaglio inking method - Google Patents

Abstract

PURPOSE:To prevent ink stayed in printing areas from being excluded at elimination of extra ink by coating the surface of an intaglio with silicone and covering the intaglio with an ink repellent flexible sheet and making the ink even with a roller and the like at inking. CONSTITUTION:Printing areas 1a are formed on an intaglio 1 and are coated with silicone 2. Ink 3 is supplied to the surface of the intaglio 1 on which an ink repellent flexible sheet 4 is covered and a roller 5 is rolled, so that the printing areas 1a are charged with the ink 3 and the ink 3 on nonprinting areas 1b is eliminated. In this case, the intaglio is in a state covered with the flexible sheet 4, so that quantity of the ink supplied to the printing areas 1a will be appropriate and uniform. Thereafter at printing, when the flexible sheet 4 is uncovered, a state of the ink 3 supplied to the printing areas is kept about the same as the top surface of the printing area 1a or slightly swollen since inner walls of the printing areas 1a are coated with the silicone 2. As a result, the whole quantity of the ink is transferred to a body to be printed without leaving any ink in the printing areas when it is printed.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention utilizes an ink-repellent flexible sheet to fill the image area of an intaglio plate with ink, and substantially all of the ink is transferred to the printing medium. The invention relates to an intaglio inking method that can be transferred to

[Prior Art] The conventional inking method in intaglio printing involves supplying A ink to the printing plate surface of an intaglio plate, and at the same time printing the ink with a doctor blade.
This involves scratching the plate surface to remove excess ink that has adhered to areas other than the printed areas.

[Problems to be Solved by the Invention] According to the conventional inking method as described above, as shown in FIG.
The upper surface becomes depressed, and not only does the amount of ink supplied to the image area 1a become insufficient, but also variations occur in the amount of ink supplied to each image area. Also, when printing,
The ink 3 is not completely transferred to the printing medium (not shown), and a portion of the ink 3 adheres to the wall surface within the image area 1a and remains.

In order to prevent such problems, a method of coating the printing plate surface of the intaglio plate with silicone and inking may be considered, but in this case, the ink during printing is good and the transfer of ink to the printing material is possible. This is convenient because the ink is completely removed, but when the ink is supplied to the printing plate surface as described above and the excess ink adhering to areas other than the image area is removed using a doctor blade or roller, the excess ink that has accumulated in the image area is removed. The ink is
Since the ink has a greater affinity for the doctor blade or roller than the printing area, the ink is carried away by the doctor blade or roller, resulting in a situation where no ink remains in the printing area and sufficient inking is not possible.

The present invention has been made to solve these conventional problems, and when inking is performed by coating the printing plate surface of an intaglio plate with silicone, after the ink is supplied to the printing plate surface, the printing line is removed using a doctor blade or roller. To provide an intaglio inking method which prevents ink accumulated in an image area from being removed together when removing excess ink adhering to areas other than the area.

[Means for solving problems] As a means to technically solve such problems,
The present invention coats the printing plate surface of an intaglio with silicone,
The gist of this method is to supply ink to the printing plate surface, cover it with an ink-repellent visibility sheet, level it with a roller, etc., and then peel off the ink-repellent visibility sheet.

In addition to a single sheet of silicone rubber, the ink-repellent visibility sheet referred to in the present invention is a silicone release layer formed on one side of a single-layer or multi-layer flexible base sheet such as a synthetic resin film or metal foil. It may be something that has been done. in this case,
It goes without saying that the release layer is directed towards the intaglio printing plate.

[Operation] After ink is supplied to the printing surface of the intaglio plate, it is covered with an ink-repellent flexible sheet and leveled with a roller, etc., so that the ink accumulated in the printing area is carried away by the roller etc. and removed. As a result, the ink is completely filled and retained within the print area. Furthermore, since the ink-repellent visible sheet is recognized during printing, almost all of the ink in the image area is transferred to the printing material.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, 1 is an intaglio plate, on the surface of which a predetermined image area 1a is formed and silicone 2 is coated. Ink 3 is supplied to the surface of this intaglio plate 1, and when a silicone sheet 4, which is an ink-repellent and visible sheet, is placed over it and the roller S is rolled, the ink 3 is filled into the printing area 1a. , the ink 3 is removed from the non-image area 1b. In this case, since the roller 5 does not come into direct contact with the ink in the image area 1a due to the ink-repellent flexible sheet 4, the ink in the image area 1a will not adhere to the roller 5 and be removed, and the ink in the image area 1a will not be removed. Kamo ink repellent flexible sheet 4
Since the lid is closed, the amount of ink supplied into the printing area 1a is appropriate and uniform.

After that, when printing, the ink-repellent flexible sheet 4
can be peeled off and printed in a conventional manner, for example by an intaglio or intaglio offset method.

In this case, since the inner wall of the image area 1a is coated with the 7 recone 2, the ink 3 filled therein is held in a state that is almost the same as the upper surface of the image area 1a or slightly raised. When printing, the entire amount is transferred to the printing medium (not shown), and a portion does not remain in the printed area as in the conventional case. Therefore, a clear and beautiful print finish can be fully expected.

In the above case, the roller 5 was moved to remove excess ink, but the invention is not limited to this, and the top of the ink-repellent visibility sheet may be squeezed with a doctor blade.

[Effects of the Invention] As explained above, according to the present invention, the surface of the intaglio is coated with silicone, and at the time of inking, the ink-repellent visibility sheet is covered and smoothed with a roller or the like. The ink filled in the image area of the intaglio is not removed or reduced by adhering to rollers, etc., and the ink is completely retained in a state covered by the silicone sheet. Therefore, an appropriate amount of ink is filled into the image area and uniformly, and the entire amount of ink is transferred to the printing medium during printing, which is an excellent effect.

[Brief explanation of drawings]

Figure 1 is a sectional view of the main parts showing an embodiment of the method of the present invention, Figure 2
The figure is a partial sectional view showing the state after inking, and FIG. 3 is an explanatory diagram of a conventional example. 1... Intaglio 1a... Drawing area 1b...
・Non-image area 2...Silicone 3...Ink 4...Ink-repellent flexible sheet 5...Roller patent applicant Toppan Printing Co., Ltd. @111 2m! Figure 3

Claims (1)

[Claims] The printing plate surface of the intaglio plate is coated with silicone, ink is supplied to the printing plate surface, an ink-repellent flexible sheet is placed on top of the coating, and the ink-repellent flexible sheet is leveled with a roller or the like, and then the ink-repellent flexible sheet is peeled off. The intaglio inking method is characterized by: